Yes, the battery indicator on laptops can also become inaccurate over time. The principle is identical: fully charge the ...

The project uses a cheap and reliable discharger circuit with an easy visual indication of the battery’s state as it creates a precision battery discharger for 8.4V 7-cell NiCad or NiMH batteries. The ...

Sometimes, your battery loses its power without you knowing. In some cases, people put their gadgets inside safe storage only to discover later that their 100% battery is not full anymore.